Kok328 - I think our concrete porch has a hollow center, but we are not certain of this. The porch is 1'4" tall (ground to top surface), 3'10" deep (front edge of porch to front of house) and 27' long (side to side). You said we should not use expansion anchors. If the center is hollow, how do we secure the threaded rods if they are longer than the depth of the concrete. We do not know how thick the concrete is. Is there a general rule of thumb for this or does it vary?
We have already checked for local codes and permits. We can add the steps without a permit. : -)
Glennjanie - thank you for the welcome and the further suggestion. We appreciate it! : -)